Improvement in quartz-crushers



1 MABBS.

Quartz Crusher. Y No. 56,581. Patented my 24, 1866.-

JOHN` MABBS, OF ISLE ROYAL MINES, MIOIGAN.

lMPROVEMENT IN `QUARTZ-CRUSHERS.

Specification forming part of Letters Patent No. 56,581., dated July 24,1866.

a, which fits into a corresponding square socket, I), in the middle, ornearly so, of the horizontal shaft E, the ends of which form thebearings for the mullers F. These mullers travel in the circular troughG, one on the inside thereof and one on its outside, as shown in Fig. 1,so that all the quartz contained in said To all whom 'it may concern Beit known that I, JOHN MABBS, of Isle l Mines, Lake Superior, in thecounty of Ht ghton and State of Michigan, have invented a new andImproved Quartz Crusher and Pulverizer; and I do hereby declare that thefollowing is a full, clear, and exact description thereof, which willenable others skilled in the art to make and use the same, referencebeing had to the accompanying drawings, forming part of thisspecification, in which-' Figure l represents a vertical section of thisinvention. Fig. 2 is a horizontal section of the same taken in the planeindicated by the line x Fig. 1.

Similar letters of reference indicate corresponding parts.

This invention relates to certain improve ments in that class ofpulverizers which are known by the terni Chili Mills.7

The improvements consist 'in the arrange ment of a feed-table whichrevolves between the wheels or mullers at a less speed, and on which thequartz is fed in such a manner that by the action of said feed-table thequartz is evenly7 distributed and exposed to the action of the mullers.A suitable plow, which is secured to the horizontal axle of the mullersand sweeps over the surface of the tables, causes -the quartz whichaccumulates on the table to drop down with uniform speed into the troughin which the mullers run. Two other plows, which sweep through thistrough, serve to keep the quartz under the mullers and to discharge thepulverized quartz. The operation of pulverizing is facilitated byadmitting water from a tank secured to the vertical arbor of the mill,and the horizontal arbor of the mullers is fitted to said verticalarbor, by means of asquare, in such a manner that each muller can riseand fall without disturbing the action of the other muller and withoutproducing any strain in the shafts.

A represents a frame of wood or any other suitable material, which formsthe bearings for the vertical shaft B, to which a revolving motion isimparted by suitable gear-wheels O, which, in practice, will bebevel-wheels, and by a belt running over a pulley on the secondary shaftD.

trough is reached by the crushing-faces of the mullers. The shaft E,being loosely connected to the main shaft B, allows each muller to riseand fall independent of the other, whereby the operation of crushing orpulverizing is materially facilitated.

On the upper part of the shaft B is fitted 2 sleeve or hollow shaft, H,to which an inde pendent revolving motion is imparted by th action of abelt, I, as shown in Fig. 1, and thi` motion is somewhat slower thanthat of th main shaft B. To this hollow shaft is secure the feed-tableJ, on which the quartz to b pulverized is fed by an endless screw, K, cany other suitable mechanism.

The quartz which accumulates on the feet table is swept off by theaction of a plow, l which is secured to the horizontal shaft E anextends over the edge of the table. Said ploi being made to revolve withthe main shaft l travels round with a somewhat greater veloci' than thefeed-table, and the quartz is grad ally swept oif and caused to dropdown in the trough G, where two other plows, M, ser to keep the sameunder the crushing-faces the mullers. The pulverized quartz, on dcharging from the trough G, collects in a s ondary trough, N, from whichit discharg through a spout, r.

The operation of crushing is facilitated a current of water which isdischarged fri a tank, O, on the feed-table in front of low L. This tankis secured to the tubu shaft H; but in practice I prefer to attacl tothe main shaft B, so that the curreni water discharging therefrom willcontinui keep in advance of the plbw L.

The endless screw K runs in a trough which is secured over the table J,as cle: shown in Fig. 1, and a revolving motio' imparted to it by apulley and belt or other suitable means, or, instead of the sc:

a feed-table or chains may be applied, and feed mechanism may be soarranged tha ated by a cone-pulle The main shaft B is provided withasquare, speed can be regul other suitable contrivance, according to thequantity of quartz to be fed to the pulverizer. What I claim as new, anddesire to secure by Letters Patent, is-

l. The feed-table J mounted on the tubular shaft H, in combination withthe mullers F and main shaft B, constructed and operating substantiallyas and for the purposes described.

2. The plow in combination with the feedtable J tubular shaft H, andhorizontal shaft E, constructed and operating substantially as and forthe purposes set forth.

3. The tank O, in. combination with the plow L, feed-table J, andmullers F, constructed `The above specification of my invention signedby me this 2d day of April, 1866.

JOHN MABBS.

Witnesses: v

WM. F. MGNAMARA, W. HAUFF.

